6:19 p.m.: YouTube CEO Susan Wojcicki says the company "will come together and heal as a family."

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6:58 p.m.: Media begin to name Nasim Aghdam as the shooter, citing law enforcement sources.

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10:26 p.m.: San Bruno police name Nasim Aghdam as the shooter and publish a photograph.

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April 4, 2018, 4:07 p.m.: YouTube releases a statement clarifying that Nasim Aghdam accessed the premises through a parking garage, and reached an outdoor courtyard where the violence unfolded. She never made it inside the building, the statement said.

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YouTube says it will increase security at all of its offices worldwide as a result of the incident.

Leanna Garfield/Business Insider

"We are also revisiting this incident in detail and will be increasing the security we have at all of our offices worldwide to make them more secure not only for the near term, but long term," the statement read in part.

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"We want to express our deepest gratitude to the first responders, including the police, fire department, and medical teams. And a huge thank you also to the wider global community for their outpouring of support, well wishes, and words of togetherness."

Stephen Lam/Reuters

YouTube's statement continued: "Your support reminds us that even in the toughest of times, the YouTube community comes together and supports one another."